CN111715426A

CN111715426A - Spray head

Info

Publication number: CN111715426A
Application number: CN201911390997.5A
Authority: CN
Inventors: 谷村竜一; 仓内亮平
Original assignee: Nitto Seiko Co Ltd
Current assignee: Nitto Seiko Co Ltd
Priority date: 2019-03-22
Filing date: 2019-12-30
Publication date: 2020-09-29
Anticipated expiration: 2039-12-30
Also published as: JP2020151390A; KR20200112628A; KR102274670B1; JP7295669B2; CN111715426B

Abstract

The invention provides a shower head, which can improve the dissolved concentration of air, generate hot water containing a large amount of micro bubbles and spray the hot water. A shower head (1) has a gas-liquid dissolution part (10) and a fine bubble generation part (20) built in a shower head body (2), the gas-liquid dissolution part (10) is configured to stir hot water to increase the dissolution concentration of air, and the fine bubble generation part (20) is configured to generate fine bubbles by turning the hot water stirred by the gas-liquid dissolution part (10) into a swirling flow. Since the shower head incorporates the gas-liquid dissolving portion, the dissolving concentration of air with respect to hot water can be increased without providing a separate dissolving tank, and by generating fine bubbles using such hot water, hot water containing a large amount of fine bubbles can be ejected.

Description

Spray head

Technical Field

The present invention relates to a shower head that sprays hot water containing fine bubbles.

Background

Conventionally, a shower head with a fine bubble generation function that sprays hot water containing fine bubbles has been disclosed (for example, see patent document 1). The shower head of patent document 1 incorporates a fine bubble generating mechanism, and can directly spray hot water containing fine bubbles from the spray holes to the skin, thereby effectively removing dirt from the skin.

[ patent document 1 ] Japanese patent laid-open publication No. 2016 and 220909

Disclosure of Invention

However, the shower head has a problem that fine bubbles cannot be generated in a large amount because the dissolved concentration of air is low, and a desired effect cannot be obtained.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a shower head capable of increasing the dissolved concentration of air, generating hot water containing a large number of fine bubbles, and spraying the hot water.

The present invention provides a shower head in which a gas-liquid dissolving portion configured to stir hot water to increase the dissolved concentration of air and a fine bubble generating portion configured to generate fine bubbles by turning the hot water stirred by the gas-liquid dissolving portion into a swirling flow are built in a shower head main body, and the above object is achieved by the shower head.

Further, preferably, the shower head main body includes: a grip portion having an inlet hole for hot water supplied from the mixing plug at one end; and a head portion connected to the grip portion and including a water spray plate for spraying hot water, the gas-liquid dissolving portion including: a dissolution chamber formed inside the grip portion; and an agitating member disposed in a central portion of the dissolving chamber and extending in a longitudinal direction, wherein the agitating member of the gas-liquid dissolving section is formed in a bottomed cylindrical shape having a bottom portion formed at a distal end portion thereof and an introduction flow path formed therein, and is disposed so that the distal end portion faces the introduction hole at a predetermined interval, so that hot water supplied from the introduction hole flows into a space formed by an outer peripheral surface of the agitating member and an inner peripheral surface of the dissolving chamber, and is agitated in the space, and a through hole for communicating the dissolving chamber with the introduction flow path is formed in an outer peripheral surface thereof, so that the introduction flow path communicates with the fine bubble generating section.

Preferably, the outer shape of the tip end portion of the stirring member in the gas-liquid dissolution portion is formed into an umbrella shape.

According to the shower head of the present invention, since both the gas-liquid dissolution part and the fine-bubble generation part are incorporated in the shower head main body, the dissolution concentration of air with respect to hot water can be increased without providing a separate dissolution tank for the shower head, and by generating fine bubbles in this manner, hot water containing a large amount of fine bubbles can be supplied.

Drawings

Fig. 1 is an external view of a shower head of the present invention.

Fig. 2 is a longitudinal cross-sectional view of the showerhead of the present invention.

Fig. 3 is an enlarged partial longitudinal cross-sectional view of the showerhead of the present invention.

Fig. 4 is a perspective view of the fine bubble generating portion of the shower head of the present invention as viewed from the upstream side.

Fig. 5 is a perspective view of the fine bubble generating portion of the shower head of the present invention as viewed from the downstream side.

Description of reference numerals:

1: a shower head; 2: a showerhead body; 3: a grip portion; 3 a: an introduction hole; 4: a head portion; 4 a: a sprinkler plate; 4 b: a water sprinkling hole; 10: a gas-liquid dissolution unit; 11: a dissolution chamber; 12: a stirring member; 12 a: a front end portion; 12 b: a bottom; 12 c: an introduction flow path; 12 d: a through hole; 13: a stirring chamber; 20: a fine bubble generating section; 21: a swirl chamber; 22: a swirling flow generating unit; 22 a: an upstream-side rotor; 22 b: a downstream-side rotary wing; 23: a lead-out flow path; 24: a slit; 25: punching a metal plate; 26: a circulation pipe; 26 a: a downstream side through hole; 26 b: an upstream side through hole.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In fig. 1, reference numeral 1 denotes a shower head, and a shower head main body 2 is configured by a grip portion into which hot water supplied from a mixing plug (not shown) is introduced, and a head portion 4 provided at a tip end of the grip portion 3 and jetting the hot water introduced into the grip portion 3. A hose (not shown) extending from the mixing plug is connected to an end of the grip portion 3, and a hot water inlet hole 3a is provided at the end. The head 4 has a water spray plate 4a with a plurality of water spray holes 4b formed in the front surface thereof, and hot water is sprayed from the water spray holes 4 b. In fig. 2 to 5, the arrows of the two-dot chain lines indicate the flow direction of the hot water.

As shown in fig. 2, the shower head main body 2 includes: a gas-liquid dissolving section 10 configured to stir the hot water to increase the dissolved concentration of the air; and a fine bubble generation unit 20 configured to generate fine bubbles by turning the hot water stirred by the gas-liquid dissolution unit 10 into a swirling flow.

The gas-liquid dissolving unit 10 is incorporated in the grip 3, and includes a dissolving chamber 11 formed inside the grip 3, and a stirring member 12 disposed in the center of the dissolving chamber 11 and extending in the longitudinal direction.

The stirring member 12 of the gas-liquid dissolving portion 10 is formed in a bottomed cylindrical shape having a bottom portion 12b at a distal end portion 12a, and an introduction flow path 12c is formed inside.

The stirring member 12 is disposed so that the distal end portion 12a faces the introduction hole 3a at a predetermined interval, and an outer peripheral surface of the stirring member 12 and an inner peripheral surface of the dissolution chamber 11 form a stirring chamber 13. Therefore, the hot water supplied from the introduction hole 3a flows outside the distal end portion 12a and flows into the stirring chamber 13. The hot water flowing into the stirring chamber 13 is stirred as indicated by the arrow shown by the two-dot chain line, and becomes a gas-liquid mixture in which the dissolved concentration of air is increased.

The distal end portion 12a of the stirring member 12 is preferably formed in an umbrella shape. This is to narrow the inlet to the stirring chamber 13 and set the volume of the stirring chamber 13 large, which has the effect of increasing the flow rate of the hot water flowing into the stirring chamber 13 and thus improving the stirring efficiency.

Further, through holes 12d are bored in two places on the outer peripheral surface of the stirring member 12, and the stirring chamber 13 and the introduction flow path 12c are communicated with each other. Therefore, the hot water stirred in the stirring chamber 13 flows into the introduction flow path 12c through the through hole 12 d.

The fine-bubble generating portion 20 is incorporated in the head portion 4 of the shower head main body 2, and is composed of a swirling chamber 21 formed inside the head portion 4 and communicating with the introduction flow path 12c of the stirring member 12, and a swirling flow generating portion 22 arranged at the center of the swirling chamber 21 and generating a swirling flow.

As shown in fig. 4, the swirling flow generating portion 22 is formed in a substantially triangular pyramid shape, and the inner shape of the swirling chamber 21 is formed so as to follow the outer shape thereof. The swirling flow generating portion 22 is disposed so that the outer peripheral surface faces the upstream side, and a plurality of upstream-side swirling vanes 22a are integrally formed on the outer peripheral surface thereof.

As shown in fig. 5, the swirling flow generating portion 22 has a plurality of downstream-side swirling vanes 22b integrally formed on the bottom surface, and the swirling flow of the hot water in the swirling chamber 21 is indicated by the two-dot chain line arrows by the

swirling vanes

22a and 22 b.

As shown in fig. 3, a lead-out flow path 23 communicates with an outlet of the swirling chamber 21, and a plurality of slits 24 branch from the lead-out flow path 23. Since these slits 24 are reduced in diameter, the flow velocity of the hot water (gas-liquid mixture) increases when passing through the slits 24, and fine bubbles are generated in the hot water by the shear force. Further, a perforated metal plate 25 is surrounded at the outlet of the slit 24, and fine bubbles contained in the hot water passing through the slit 24 are further subdivided. Then, as shown in fig. 1, hot water containing fine bubbles is sprayed to the outside from the water spray holes 4b of the water spray plate 4 a.

Further, the circulation pipe 26 may be incorporated in the lead-out flow path 23. The circulation pipe 26 includes through

holes

26a and 26b in the upper and lower directions, and takes in hot water in the lead-out flow path 23 from the downstream side through hole 26a and discharges the hot water from the upstream side through hole 26 b. In this way, the circulation pipe is configured to increase the dissolved concentration of the gas by circulating hot water in the lead-out flow path 23.

According to the shower head 1, the gas-liquid dissolution part 10 is built in, and therefore, the dissolution concentration of air with respect to hot water can be increased without providing a separate dissolution tank for the shower head. Further, by generating fine bubbles using hot water having an increased dissolved concentration of air, a large amount of fine bubbles can be generated.

Further, since the gas-liquid dissolving portion 10 is configured to stir the hot water around the stirring member 12, that is, configured to stir the hot water outside the inside of the grip portion 3, even in a state where the stirring chamber 13 is not filled with the hot water when the shower head 1 is tilted, the hot water is stored in the stirring chamber 13, and thus the stirring efficiency is not lowered. Further, the through hole 12d of the stirring member 12 is provided at a position that is a side surface with respect to the sprinkler plate 4 a. Therefore, even when the shower head 1 is tilted so that the sprinkler plate 4a faces downward and the inside of the stirring chamber 13 is not filled with hot water, the hot water can be supplied from the stirring chamber 13 to the introduction flow path 12c, and thus the injection does not stop.

The specific configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

Claims

1. A spray header is characterized in that a spray head is provided,

the shower head body is provided with a gas-liquid dissolving part and a fine bubble generating part,

the gas-liquid dissolving part is configured to stir hot water to increase the dissolved concentration of air,

the fine bubble generating unit generates fine bubbles by turning the hot water stirred by the gas-liquid dissolving unit into a swirling flow.

2. The showerhead of claim 1,

the shower head main part includes:

a grip portion having an inlet hole for hot water supplied from the mixing plug at one end; and

a head part connected with the holding part and provided with a water spraying plate for spraying hot water,

the gas-liquid dissolution unit includes:

a dissolution chamber formed inside the grip portion; and

a stirring member disposed at the center of the dissolution chamber and extending in the longitudinal direction,

the stirring member of the gas-liquid dissolving section is formed in a bottomed cylindrical shape having a bottom portion formed at a distal end portion thereof and an introduction flow path formed therein, and is disposed so that the distal end portion faces the introduction hole at a predetermined interval, whereby hot water supplied from the introduction hole flows into a space formed by an outer peripheral surface of the stirring member and an inner peripheral surface of the dissolving chamber to stir the water in the space, and a through hole for communicating the dissolving chamber with the introduction flow path is formed in an outer peripheral surface thereof to communicate the introduction flow path with the fine bubble generating section.

3. The showerhead of claim 1 or 2,

the outer shape of the tip of the stirring member in the gas-liquid dissolution part is formed into an umbrella shape.